D13.7 vs D35
D13.7 and D35 can never be reported together. ICD-10-CM declares them mutually exclusive with an Excludes1 note, meaning the two conditions cannot occur in the same patient — so exactly one of them is correct for any given encounter.
The official note, declared on D35
benign neoplasm of endocrine pancreas (D13.7)
D13.7
Benign neoplasm of endocrine pancreas
Billable
- Chapter 2
- Neoplasms
- Section
- D10-D36
Use when the record says
- Islet cell tumor
- Benign neoplasm of islets of Langerhans
Indexed under
- Islet cell tumor, pancreas
- Nesidioblastoma › pancreas
- Nesidioblastoma › unspecified site
- Adenoma › alpha-cell › pancreas
- Adenoma › alpha-cell › unspecified site
D35
Benign neoplasm of other and unspecified endocrine glands
Not billable
- Chapter 2
- Neoplasms
- Section
- D10-D36
Excludes1 is not always absolute: where two conditions covered by the note are genuinely unrelated, CMS guidance permits reporting both. Document the reasoning rather than assuming it. More on Excludes1 vs Excludes2 · FY2027